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Finding the Fourth Proportional to 651,467,688.80, 977,201,533.20 and 651,467,688.80

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Solution

The fourth proportional to 651,467,688.80, 977,201,533.20 and 651,467,688.80 is: 977,201,533.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,467,688.80 : 977,201,533.20 = 651,467,688.80 : x
  2. Step 2: Convert to fraction form
    651,467,688.80/977,201,533.20 = 651,467,688.80/x
  3. Step 3: Cross multiply
    651,467,688.80x = 977,201,533.20 × 651,467,688.80
  4. Step 4: Simplify right side
    651,467,688.80x = 636,615,224,325,620,480
  5. Step 5: Solve for x
    x = 636,615,224,325,620,480/651,467,688.80
  6. Step 6: Final answer
    x = 977,201,533.20

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.